william p



DRAFT EQUALIZER.

Patnted Feb.- v5

INVENTOR;

lo-Lilhognpmr. Washingm'n, n. C.

UNITED STATES PATENT OFFICE.

WILLIAM r. oRANNIs, on woLoo'rrviLtn, 'innmna.

DRAFT-EQUALIZER.

SPECIFICATION formingpart of Letters Patent No. 293,008, dated February5, 1884. Application filed September 19, 1833. (No model.)

To all whom, it 12210.7 concern:

Be it known that I, \ViLLLin I. GRANNIS, a citizen of the United States,and a resident of Wo1c0ttvi11e,in the county of La Grange and State ofIndiana,, have invented certain new and useful Improvements inDraft-Equalizers; and I do hereby declare that the following is a full,clear,. and exact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings,which form a part ofthis specification, and in which- Figure 1 is a. perspective view of myimproved draft-equalizer, showing the same in a closed position for twohorses. Fig. 2 is a perspective view of the samein an open position asit is used when three horses are pulling abreast; and-Fig. 3 is alongitudinal horizontal sectional view of the equalizer taken 0 line 00m, Fig. 2.

Similar letters of reference indicate corresponding parts in all thefigures.

My invention has relation to draft-equalizers; and it consists in theimproved construe tion and combination of parts of the same, as will behereinafter more fully described and claimed.

In the accompanying drawings, A repre sents the double-tree, having uponits rear side the brace A, consisting of a metal rod, 13, passing over ametal block, B, and having its extremities fastened to the double-treenear either end of the said tree.

Upon the rear side of the cloubletree A, near each of its ends, issecured a chafing-plate, G,

having fastened rigidly upon it by either extremity a guide-rod, D.

E indicates ametal block of a greater width than the chafing-plate O,and provided with grooves F and G, within which the chafingplate 0 andthe guiderod D fit, and with aspringcatch, H, adapted to engage with anyone of a series of apertures, I,in the chafingplate. 0.

J indicates a metal link, which passes through an aperture in the metalblock E, and connects it to a similar metal block, K, sliding betweensimilar chafing-plates, L, and guide-rods M on each of the single-treesN.

O O'represent metal clips,which are secured one to the clip on the innerend of each single-tree, each of the clipsO Ohaving a slot, 1?, throughwhich passesa metal bar or piece, Q, having on either end a hook, R,towhich the traces are attached. One end of the piece Q is extended andsharpened to adapt it toenter an aperture, L, in, the upwardly-curvedend L of the chafing-plate L. The piece Q is provided upon its upperedge with two or more notches, Q, one at about its center and the othernear its outer edge, with which a key, Q, passing through the clip Q, isadapted to engage, for the purpose hereinafter speci fied.

To adjust my improved draftequalizer for the use of two horses, theextended sharpened end of each of the pieces Q is inserted within theaperture L in the upwardly-curved ends of each of the chafingplates Land fastened securely in that position by means of the keys Q. Thesliding blocks E Eand K K are then moved so as to bring the single treesN N to geth'er or into their closed position, as shown in Fig. 1 of the,drawings, the blocks being held in their adjusted position by theircatches H engaging with the apertures I in each of the chafingplates.The traces for the two horses are then hooked to the hooks on the outerends of each of the single-trees NN and to the hooks on the outer orfree ends of each of the bars or pieces Q Q.

To adjust my improved draft-equalizer in order that three horses maypull abreast, the bars Q Q are moved half-way through the clips 0 O, andare locked in that position by the keys Q engaging with their centralnotches, Q. The sliding blocks E E and K K are then moved so as to placethe single-trees N N at the greatest possible distance from each other,as shown in Fig. 2 of the drawings. The traces for two of the horses arethen hooked to the hooks on the outer ends of each of the singlevoid ofall complicated mechanism, is not lia-' ble to break or get out oforder.

guide-rods M M, and movable blocks E E and K K, connected together bylinks J, and having grooves F G, and spring-catches H, adapted to engagewith the apertures I of the chafing-plates, all constructed and arrangedto operate substantially in the manner and for the purpose shown and setforth.

2. In a clraft-et ualizer of V substantially the described construction,the combination of the 20 single-trees N N, provided with the slot-tedclips 0 O, secured to the single-trees 011 their inner ends, with theliars Q Q, adapted to be adjustably secured Within the slotted clips 0 Oby means of keys Q Q, and having their 25 inner ends extended to adaptthem to enter apertures L in the upwardly-curved ends of thechafing-plates L L, as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my 0 own I have hereuntoaflixed my signature in presence of two witnesses.

\VILLIAM I. GRANNIS.v

\Vitnesses: OTIS P. GRANNIS, FRANK SMrrI-I.

